And finally, another person who goes by u/Ok-Procedure6647 gave the husband some things to think about.

“This woman thinks it’s okay to wear a wedding dress to the wedding of a family member because she *checks notes* thinks the bride is too shy and doesn’t like her. She then proceeds to not only double down when called on it, but accuse you of controlling her,” they said.

“OP, this is over an outfit — how is this woman going to react when you’re buying a house? Picking a city to live? Have a child that requires any sort of decision? If she’s willing to go this far — accuse you of a form of abuse — to get her way, what the hell else is she capable of doing over something larger?”

Source: https://www.buzzfeed.com/jenniferadams2/aita-wedding-dress-cousins-wedding